00458nam 2228560 450000100060000000300230000600500090002900800410003808200080007907200340008702000170012110000120013826000310015024500320018165000340021365000430024728560StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a621 aOptimizing Radio Spectrum Use a0-75063740-4 aGosling bNEWNES-Butterworths c2000 aradio spectrum conservation aOptimizing Radio Spectrum Use aThe Radio Spectrum as aFinite Resource